So far, I have eliminated the brakes, ABS sensors, front bearing hub, and the CV joint.
Can anyone give other suggestions as to the probable cause of this grinding sound prodominetly from the left front.

Thx..........CDL

4x4? Not sure how the frontend is setup in the Grands, but you might want to look at the differential. Sound might be resonating from the diff through the CV axle. Just an idea. Also, how did you checkthe hub bearing?

If its a 4x4 ya I would check the transfer case while the car is in drive on a lift. Is there any noise coming from the transfer case?

4x4? Not sure how the frontend is setup in the Grands, but you might want to look at the differential. Sound might be resonating from the diff through the CV axle. Just an idea. Also, how did you checkthe hub bearing?

While up on jacks holding tire from 12 oclock and 6 oclock position moved tire back and forth, also from to 9 oclock and 3 oclock side to side, in and out, and there was absolutely no free play whatsoever, and also done a visual inspection. Those are the only two way I know on how to check wheel bearing...CDL

the wheel bearings on a dana 30 can bind up with little to no play at first...does the wheel seem harder to spin than the other? gtmud had a point with the differental, you might wanna take the cover off and check the carrer bearings too.

bearing play and bearing noise do not necessarily co-exist.

The wheel bearings are a sealed unit on the GC's and to check for roughness the bearing unit should be removed for definite diagnosis. To do this you need to remove the caliper, the rotor, the axle nut and three bolts that hold the bearing unit to the steering knuckle. A puller is recommended to remove the unit but I succeeded using a carefully located large brass punch and a hammer from the inside of the knuckle.

It is difficult to remove due to rust rust buildup.

Once free from the axle and housing, work the hub back and forth in several locations. Any roughness detected here could be the cause of your noise.

If you want to continue on to check the side bearings on the diff carrier, you will need to remove both axles any way so you are half way there if the wheel bearing is ok. That way you can check both wheel bearigs before you dig deep into the diff.

one other source of noise can be the tires. what shape are they in?? Try a rotation and see if the noise changes.

JD